Inductance type metal detector
A metal detector, inductive technology, applied in the electronic field, can solve the problems of high price, shallow burial, complicated operation, etc., and achieve the effect of simple circuit and low production cost
Active Publication Date: 2013-11-20
肇庆市启华电子科技有限公司
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Problems solved by technology
[0005] Purpose and beneficial effects of the invention: the present invention can solve relatively simple metal detection problems, and is used to solve and make up for the defects or deficiencies of large metal detection instruments
The invention can solve the detection problems of relatively shallow buried metal objects encountered in daily life, such as detection of metal pipelines hidden in the wall, etc., and make up for the common problems of large-scale metal detection instruments such as complicated operation and high price
Method used
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[0012] According to attached figure 1 The present invention can be realized by implementing the working principle diagram of the circuit shown and the description of the accompanying drawings and the technical requirements described below.
[0013] Component selection:
[0014] 1. Production of the detection probe: the high-frequency oscillation transformer B is wound on a ￠5mm, 4mm high "I"-shaped high-frequency magnetic core with ￠0.12mm enameled wire; the turns of the three windings are: The number of turns of the winding is 25T, the number of turns of the second winding is 11T, and the number of turns of the third winding is 60T; the order of winding is to wind the third winding first, then the second winding, and finally the I winding. Impregnated with high-frequency wax after completion;
[0015] 2. In order to improve the sensitivity of the detection probe for sensing metal objects, metal objects cannot be used to fasten the high-frequency oscillation transformer B wh...
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The invention relates to an inductance type metal detector, which is composed of a 6V direct current power supply, a detection probe, a high-frequency oscillation circuit, a voltage-multiplying detection circuit, a direct current phase inversion amplifying circuit and a photoelectric indication circuit. The inductance type metal detector can solve relative simple metal detection problems and is used for overcoming defects or shortcomings of large metal detection instruments. The inductance type metal detector can solve daily detection problems of metal substances which are buried relatively shallow, including: detecting metal pipelines distributed in a wall in hidden mode and the like, and the inductance type metal detector can solves problems of complex operation, high price and the like commonly existing in the large metal detection instruments. The inductance type metal detector is simple in circuit and low in manufacture cost, and can be developed as a practical instrument.
Description
technical field [0001] The invention belongs to the technical field of electronics and relates to an inductive metal detector. Background technique [0002] There are many types of instruments specially used to detect metal objects. Large-scale and powerful metal detection instruments can be used to detect whether there are guns, daggers and other metal objects hidden in the human body, luggage, and packages within 5m. This type of detection instrument is suitable for airports, Rapid security inspection of luggage or human bodies in public places such as stations, docks, customs, public security, and frontier defense; it can also be used to detect hidden wires in walls, buried water pipes or cables, and can even be used for underground treasure hunting or detection Metal objects buried up to 5 meters deep in the ground. Their common features are powerful functions, long detection distance and accurate detection results. However, they generally have practical problems such ...
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IPC IPC(8): G01V3/11
Inventor 刘德军黄勇
Owner 肇庆市启华电子科技有限公司